Two bands rose from the ashes of the heavily hyped At the Drive-In. While Sparta went the emo route, The Mars Volta headed into out-there territory with their hard progressive rock. Lucky for them, their particular fast and loose, offen jazzy, style of experimentalism, complete with intricate guitar solos and impressive wailing, plays well with music buyers, appealing to both heavy metal and prog fans. The new year sees the release of their fourth album, “Bedlam in Goliath.” .